Why do some responses in quizzes replicate themselves automatically?

I have had this problem quite a bit. I'll write a quiz, and then the answers will replicate themselves. I've had it happen in multiple choice and in multiple drop downs. In fact, when I go in and delete the replicated answers, the answer multiply. The only option I can think of, is to delete the question all together and re-write the question.

Thanks for the video but I'm still no closer to being able to provide an answer. I think you'll need to click the Help button on the left side of Canvas and report the problem. Include your video as well. The thing even remotely similar that I've ever seen before was an instructor not being able to edit feedback on a quiz question in a question bank. It turns out the question had been imported from another system and something "behind the scenes" was causing some issues. The would be my guess here, that it's something we can't see through the WebUI and support it going to have to take a deeper dive to figure things out.

I have never heard of something like that happening. Is this something you can readily reproduce? If so, it would be helpful to create a screencast of it using something like Jing or equivalent to share so we can see the exact steps. We might be able to see something in the process from a video like that. And, if you need to submit it to support the screencast video will also be helpful to them.

Thanks for the video but I'm still no closer to being able to provide an answer. I think you'll need to click the Help button on the left side of Canvas and report the problem. Include your video as well. The thing even remotely similar that I've ever seen before was an instructor not being able to edit feedback on a quiz question in a question bank. It turns out the question had been imported from another system and something "behind the scenes" was causing some issues. The would be my guess here, that it's something we can't see through the WebUI and support it going to have to take a deeper dive to figure things out.